Railway carriage axle box



Dee. 10, 1935.

G. W. D. LESLIE ET AL RAILWAYCARRIAGE AXLE Box Filed June 23, 1954 Patented Dec. 10, 1935 UNITED STATES PATENT OFFICE RAILWAY CARRIAGE AXLE Box ton, Tasmania Application June 23, 1934, Serial No. 732,152 In Australia June 28, 1933 1 Claim.

This invention relates to railway axle boxes fitted with lubrication distributors such as pads or rollers immersed in an oil bath and peripherally contacting with the journal to apply lubrication thereto.

In the accompanying drawing:-

Fig. 1 is a longitudinal vertical section through an axle box according tothe invention;

Fig. 2 is a half horizontal section therethrough; and

Fig. 3 is a halved transverse vertical section and front end elevation.

Oil reservoirs A-A are cored in each side wall of the box. These reservoirs are each provided with a filler plug B at their top ends; at their bottom ends they are in communication with the oil bath cell C which occupies the centre part of the box. Oil passes at a slow rate from the oil reservoirs A-A into the bottom of the cell C through apertures E of small cross sectional area in the partition walls, until the oil level in the cell C comes above those apertures, whereupon the oil flow ceases until the level in the cell C drops again and exposes the apertures E. Constant feed of clean fresh oil to the cell C is thus assured, and the oil level in the cell C is thus maintained. It is to be noted that the side reservoirs A are rendered airtight after the plugs B are screwed therein and in this connection it is necessary that the said plugs be inserted very quickly after the filling operation to ensure of the effective operation of the reservoirs.

A half circle obturator member M checks leakage of oil from the cell C backward past the shoulder of the journal T into the slotway K. The obturator M is kept up to contact with the journal fillet by a curved leaf springs N below it and it is pushed backward by leaf springs O which are xed to it and which bear against a cross ridge O' upstanding on the cell bottom be'- low the journal. These springs N and O influence the obturator upward and backward.

As shown in Fig. l, the floor plate W of the oil distributor cradle P is embraced atl its back end between two upstanding lugs Q which are integral with the cross ridge O on the box bottom. The floor plate W is latched in centre position in the cell C by engagement of a staple hole in the tail piece R on its outer end with a latch lug or pin S which projectsinward from a closure plug S in the outer end of the axle box. The distributor rollers L contact peripherally with the underside of the axle journal T, and are held up to contact therewith by a curved leaf spring D which is riveted at W2` to the floor plate W of the cradle and engages between notches in the ends of the cradle carrier plate X on which the bearing brackets L-L2 which carry the lubricator rollers L are fixed. The rear bearing bracket L2 is supported laterally by the 5 upstanding lugs Q, and the erectness of the cradle 'is thus ensured. The lubricator rollers L have angle section peripheral grooves in their ends. These grooves fill with oil from the well and carry this oil up to the journal, ensuring ade- 10 quate oil service. Excess oil is squeezed to a film between the peripheral faces of the rollers L and the surface of the journal. The bottom of the axle box is inclined downwardly and is grooved centrally as shown at V to provide a seating 15 channel for the floor plate W of the lubricator cradle.

The normal oil level in the journal cell C is indicated by the dotted line Z. Oil flow into the cell C from the reservoirs A is checked au- 20 tomatically as soon as the oil level in the cell C reaches this level.

If desired, the oil may be distributed over the journal surface by means of spring-borne lubrication pads such as are commonly used in known 25 axle boxes, instead of by the rollers shown in Fig. l.

What we claim as our invention and desire to secure by Letters Patent isz- A railway axle lubricator box having a central 30 longitudinal cell, lateral oil reservoirs fianking said cell and in communication therewith through lowlevel ports in the partition walls, a sloping oor and a longitudinal groove in the bottom of said centre cell, a cross ridge with 35 forwardly extending lateral lugs integral with the box bottom at the back end thereof, a latch lug projecting inward from the front end of the box, an obturator slidingly seated between said cross ridge and the back end of the box, leaf 40 Vsprings influencing said obturator backward and upward, a lubricator carrier plate supported in the bottom of the box, a leaf spring engaging notches in the ends of said carrier plate and supporting said carrier plate, a oor plate sup- 45 porting said spring and seated vin said longitudinal groove, the back end of said carrier plate being located between said lateral lugs and the front end detachably fixed by engagement of the latch lug projecting into the front end of the 50 axle box with a staple hole in an upturned tail piece on said floor plate.

' GEORGE WALTER DANFORD LESLIE. REGINALD BRODIE WEMYSS LESLIE. 

